This book expounds the birth of the Fourth United States. Every country has a fundamental change every seventy or eighty years. There have been three stages during the past 240 years since the founding of the United States in 1776; and they can be called "three United States". The first United States was Washington's independence. The second one was Lincoln's reunification. The third was Roosevelt's superpower. Now the fourth United States has been born. All the Ancient mythologies, medieval philosophies, and modern science believe that new things would be born of chaos and whirlpool. Although no one understand so clear what is the mission of the fourth United States that has just been started, the vision to Make America Great Again has caused deep impact. The finishing of 60 Presidencies means the starting of a new greater period. Will the changes caused by the birth of the fourth United States be greater than that by the previous three? After all, this is a era of globalization.